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Chat session to make multi-turn send message request. sendMessage method makes async call to get response of a chat message. sendMessageStream method makes async call to stream response of a chat message.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Class ChatSession (0.3.1)\n\nChat session to make multi-turn send message request. `sendMessage` method makes async call to get response of a chat message. `sendMessageStream` method makes async call to stream response of a chat message.\n\nPackage\n-------\n\n[@google-cloud/vertexai](../overview.html)\n\nConstructors\n------------\n\n### (constructor)(request)\n\n constructor(request: StartChatSessionRequest);\n\nConstructs a new instance of the `ChatSession` class\n\nProperties\n----------\n\n### generation_config\n\n generation_config?: GenerationConfig;\n\n### history\n\n get history(): Content[];\n\n### safety_settings\n\n safety_settings?: SafetySetting[];\n\n### tools\n\n tools?: Tool[];\n\nMethods\n-------\n\n### appendHistory(streamGenerateContentResultPromise, newContent)\n\n appendHistory(streamGenerateContentResultPromise: Promise\u003cStreamGenerateContentResult\u003e, newContent: Content[]): Promise\u003cvoid\u003e;\n\n### sendMessage(request)\n\n sendMessage(request: string | Array\u003cstring | Part\u003e): Promise\u003cGenerateContentResult\u003e;\n\nMake an sync call to send message.\n\n### sendMessageStream(request)\n\n sendMessageStream(request: string | Array\u003cstring | Part\u003e): Promise\u003cStreamGenerateContentResult\u003e;\n\nMake an async call to stream send message. Response will be returned in stream."]]
